Synergistic effect of bimetallic RuPt/TiO2 catalyst in methane combustion

Cao, Shi-Ying; Ye, Fan; Zhang, Nini; Guo, Yanglong; Guo, Yun; Wang, Li; Dai, Sheng; Wang, Zhan

doi:10.1007/s12598-022-02118-7

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…Compared with monometallic catalysts, bimetallic catalysts have unique electronic properties and geometrical structures, which often have a remarkable synergistic effect. 21 Cao 22 et al prepared RuPt/TiO 2 catalyst by in situ reduction and air calcination. The synergistic effect between Ru−Pt and the high-valence Pt facilitated the adsorption and activation of methane, which made the catalyst exhibit higher activity and stability.…”

Section: ■ Introductionmentioning

confidence: 99%

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Yu,

Ke,

Wang

et al. 2024

Chem. Mater.

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The specific structure of the support and the interactions between the catalyst components can lead to electron transfer, which in turn could affect the catalytic performance in heterogeneous catalytic reactions. In this paper, we have successfully prepared Mn x O y C z composite materials from the calcination of the Mn-organic framework. Then bimetallic Au−Pt nanoparticles (NPs) were supported onto Mn x O y C z via the colloidal-deposition method. These catalysts were tested in the selective oxidation of glycerol to glyceric acid under basic conditions. The results demonstrated that the catalytic activity of the bimetallic Au−Pt/ Mn x O y C z catalyst is considerably superior to those of the monometallic (Au and Pt) supported catalysts. Under the optimized conditions, 100% of glycerol can convert with 57.3% selectivity of glyceric acid. Multicharacterizations showed that the strong interaction between Au and Pt in the Au−Pt/Mn x O y C z catalyst can enhance the dispersion of Au−Pt alloy NPs, promoting the electronic coupling effect on the metal surface. At the same time, the rich oxygen vacancies in this catalyst can facilitate the activation of oxygen, which causes the Au−Pt/Mn x O y C z catalyst to show better catalytic activity. Specifically, the interaction between Au and Pt not only decreases the particle size of the Au−Pt alloy NPs but also promotes the reduction of Mn-based oxides and the mobility of oxygen. The absence of Au leads to a decrease in Pt 4f 7/2 binding energy, resulting in an enrichment of electrons at the Pt active site and enhancing the oxidation ability of the primary hydroxyl group. In addition, the Au−Pt/Mn x O y C z catalyst showed excellent stability without substantial loss of activity after being recycled five times. The insights and methodology may provide some new guidance for the reasonable design of bimetallic catalysts for the catalytic oxidation of biopolyols under mild conditions.

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Section: ■ Introductionmentioning

confidence: 99%

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Yu,

Ke,

Wang

et al. 2024

Chem. Mater.

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“…The synergistic effect of nanoparticles and chiral ligands in chiral nanomaterials plays a key role in achieving superior catalytic performance. [ 18 , 19 ] Overall, the dimensional matching, preferred modification, and catalysis active sites helped to promote catalysis activity and selectivity to corresponding substrates.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Chiral Nanomaterials with Selective Catalysis Activity

Cao,

Yang,

Kim

et al. 2024

Advanced Science

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Chiral nanomaterials with unique chiral configurations and biocompatible ligands have been booming over the past decade for their interesting chiroptical effect, unique catalytical activity, and related bioapplications. The catalytic activity and selectivity of chiral nanomaterials have emerged as important topics, that can be potentially controlled and optimized by the rational biochemical design of nanomaterials. In this review, chiral nanomaterials synthesis, composition, and catalytic performances of different biohybrid chiral nanomaterials are discussed. The construction of chiral nanomaterials with multiscale chiral geometries along with the underlying principles for enhancing chiroptical responses are highlighted. Various biochemical approaches to regulate the selectivity and catalytic activity of chiral nanomaterials for biocatalysis are also summarized. Furthermore, attention is paid to specific chiral ligands, materials compositions, structure characteristics, and so on for introducing selective catalytic activities of representative chiral nanomaterials, with emphasis on substrates including small molecules, biological macromolecule, and in‐site catalysis in living systems. Promising progress has also been emphasized in chiral nanomaterials featuring structural versatility and improved chiral responses that gave rise to unprecedented chances to utilize light for biocatalytic applications. In summary, the challenges, future trends, and prospects associated with chiral nanomaterials for catalysis are comprehensively proposed.

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“…[14][15][16] The primary aim of LHPCS curing is to form a cross-linked structure for reducing the volatilization of small molecule components and increasing the high-temperature ceramic yield. 17 The general curing methods of LHPCS are thermal crosslinking in an inert atmosphere, [18][19][20] the addition of initiators, [21][22][23] and UV irradiation. [24][25][26] The thermal crosslinking of LHPCS does not introduce impurities or new elements because only inter-or intra-molecular reactions occur.…”

Section: Introductionmentioning

confidence: 99%

Curing reactions of liquid hydridopolycarbosilanes with vinyl or allyl groups

Qian,

Cao,

Chu

et al. 2023

J of Applied Polymer Sci

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Liquid hydridopolycarbosilanes (LHPCS) with vinyl or allyl groups have attracted significant research interest due to their low curing temperature and high ceramic yield. In this study, allyl‐terminated hydridopolycarbosilane (AHPCS) and vinyl‐terminated hydridopolycarbosilane (VHPCS) were prepared by the Grignard coupling reaction and characterized by NMR and Fourier infrared spectroscopy (FTIR). And the curing reactions of AHPCS and VHPCS with or without initiators (dicumyl peroxide [DCP], tert‐Butyl peroxybenzoate [TBPB]) or Karstedt catalyst were investigated using differential scanning calorimetry and in‐situ FTIR. The main curing reactions of VHPCS and AHPCS are the double bond free radical polymerization and hydrosilylation reaction, respectively. The addition of initiators and Karstedt catalyst could promote the corresponding curing reaction and increase the weight residual at 1000°C. The thermal properties of the cured resins were investigated by thermogravimetric analysis. The addition of initiators and catalyst could significantly increase the weight residual of VHPCS and AHPCS, respectively. The addition of the Karstedt catalyst increased the weight residual of AHPCS from 75.6% to 83.1%. In addition, the addition of TBPB and DCP increased the weight residual of VHPCS from 74.2% to 81.2% and 80.2%, respectively.

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Synergistic effect of bimetallic RuPt/TiO2 catalyst in methane combustion

Cited by 13 publications

References 41 publications

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Biomimetic Chiral Nanomaterials with Selective Catalysis Activity

Curing reactions of liquid hydridopolycarbosilanes with vinyl or allyl groups

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Synergistic effect of bimetallic RuPt/TiO2 catalyst in methane combustion

Cited by 13 publications

References 41 publications

MOFs-Derived MnxOyCz Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived MnxOyCz Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

Biomimetic Chiral Nanomaterials with Selective Catalysis Activity

Curing reactions of liquid hydridopolycarbosilanes with vinyl or allyl groups

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Product

Resources

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MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid

MOFs-Derived Mn_xO_yC_z Supported Bimetallic Au–Pt Catalyst for the Catalytic Oxidation of Glycerol to Glyceric Acid